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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* Additional copyright for this file:
* Copyright (C) 1995-1997 Presto Studios, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "pegasus/gamestate.h"
#include "pegasus/ai/ai_area.h"
#include "pegasus/items/inventory/airmask.h"
#include "pegasus/neighborhood/neighborhood.h"
namespace Pegasus {
AirMask *g_airMask = 0;
// Based on full == 100, which is scale used by GetAirLeft().
static const TimeValue kOxygenLowThreshold = 25;
void AirMask::airMaskTimerExpired(FunctionPtr *, void *) {
if (g_neighborhood)
g_neighborhood->checkAirMask();
}
AirMask::AirMask(const tItemID id, const tNeighborhoodID neighborhood, const tRoomID room, const tDirectionConstant direction) :
InventoryItem(id, neighborhood, room, direction), _toggleSpot(kAirMaskToggleSpotID) {
g_airMask = this;
_toggleSpot.setArea(Common::Rect(kAIMiddleAreaLeft + 10, kAIMiddleAreaTop + 17, kAIMiddleAreaLeft + 110, kAIMiddleAreaTop + 57));
_toggleSpot.setHotspotFlags(kAirMaskSpotFlag);
g_allHotspots.push_back(&_toggleSpot);
setItemState(kAirMaskEmptyOff);
_oxygenTimer.primeFuse(0);
_oxygenTimer.setFunctionPtr(&airMaskTimerExpired, 0);
}
AirMask::~AirMask() {
g_allHotspots.removeOneHotspot(kAirMaskToggleSpotID);
g_airMask = 0;
}
void AirMask::writeToStream(Common::WriteStream *stream) {
InventoryItem::writeToStream(stream);
stream->writeUint32BE(_oxygenTimer.getTimeRemaining());
}
void AirMask::readFromStream(Common::ReadStream *stream) {
_oxygenTimer.stopFuse();
InventoryItem::readFromStream(stream);
_oxygenTimer.primeFuse(stream->readUint32BE());
}
void AirMask::putMaskOn() {
tAirQuality airQuality;
if (g_neighborhood)
airQuality = g_neighborhood->getAirQuality(GameState.getCurrentRoom());
else
airQuality = kAirQualityGood;
uint airLevel = getAirLeft();
tItemState newState = getItemState();
tItemState oldState = newState;
if (airLevel == 0) {
newState = kAirMaskEmptyFilter;
} else if (airLevel <= kOxygenLowThreshold) {
if (airQuality == kAirQualityVacuum)
newState = kAirMaskLowOn;
else
newState = kAirMaskLowFilter;
} else {
if (airQuality == kAirQualityVacuum)
newState = kAirMaskFullOn;
else
newState = kAirMaskFullFilter;
}
if (newState != oldState)
setItemState(newState);
}
void AirMask::takeMaskOff() {
uint airLevel = getAirLeft();
tItemState newState = getItemState();
tItemState oldState = newState;
if (airLevel == 0)
newState = kAirMaskEmptyOff;
else if (airLevel <= kOxygenLowThreshold)
newState = kAirMaskLowOff;
else
newState = kAirMaskFullOff;
if (newState != oldState)
setItemState(newState);
}
void AirMask::toggleItemState() {
if (isAirMaskInUse())
takeMaskOff();
else
putMaskOn();
}
void AirMask::airQualityChanged() {
if (isAirMaskInUse())
putMaskOn();
else
takeMaskOff();
}
void AirMask::setItemState(const tItemState newState) {
if (newState != getItemState()) {
InventoryItem::setItemState(newState);
switch (newState) {
case kAirMaskFullOn:
case kAirMaskLowOn:
if (!_oxygenTimer.isFuseLit()) {
_oxygenTimer.lightFuse();
startIdling();
}
break;
default:
if (_oxygenTimer.isFuseLit()) {
_oxygenTimer.stopFuse();
stopIdling();
}
break;
}
if (g_neighborhood)
g_neighborhood->checkAirMask();
g_AIArea->checkMiddleArea();
}
}
void AirMask::useIdleTime() {
if (getAirLeft() == 0)
setItemState(kAirMaskEmptyOff);
else if (getAirLeft() <= kOxygenLowThreshold)
setItemState(kAirMaskLowOn);
}
void AirMask::refillAirMask() {
switch (getItemState()) {
case kAirMaskEmptyOff:
case kAirMaskLowOff:
setItemState(kAirMaskFullOff);
break;
case kAirMaskEmptyFilter:
case kAirMaskLowFilter:
setItemState(kAirMaskFullFilter);
break;
case kAirMaskLowOn:
setItemState(kAirMaskFullOn);
break;
}
if (_oxygenTimer.isFuseLit()) {
_oxygenTimer.stopFuse();
_oxygenTimer.primeFuse(kOxyMaskFullTime);
_oxygenTimer.lightFuse();
} else {
_oxygenTimer.primeFuse(kOxyMaskFullTime);
}
}
// Doesn't return 0 until the timer is actually at 0.
uint AirMask::getAirLeft() {
return CLIP<int>(((_oxygenTimer.getTimeRemaining() * 100) + kOxyMaskFullTime - 1) / kOxyMaskFullTime, 0, 100);
}
bool AirMask::isAirMaskInUse() {
switch (getItemState()) {
case kAirMaskEmptyOff:
case kAirMaskLowOff:
case kAirMaskFullOff:
return false;
break;
default:
return true;
break;
}
}
bool AirMask::isAirMaskOn() {
switch (getItemState()) {
case kAirMaskLowOn:
case kAirMaskFullOn:
return true;
break;
default:
return false;
break;
}
}
bool AirMask::isAirFilterOn() {
switch (getItemState()) {
case kAirMaskEmptyFilter:
case kAirMaskLowFilter:
case kAirMaskFullFilter:
return true;
break;
default:
return false;
break;
}
}
void AirMask::addedToInventory() {
GameState.setMarsMaskOnFiller(false);
}
void AirMask::removedFromInventory() {
if (isAirMaskInUse())
toggleItemState();
}
void AirMask::activateAirMaskHotspots() {
_toggleSpot.setActive();
}
void AirMask::clickInAirMaskHotspot() {
toggleItemState();
}
} // End of namespace Pegasus
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